Description
The Allen-Bradley 1785-ENET is a specialized communication interface module designed to provide Ethernet/IP connectivity to PLC-5 programmable controllers. This module acts as a sidecar unit, mounting directly to the side of a PLC-5 processor to facilitate high-speed data exchange over standard Ethernet TCP/IP networks.
Features
- Provides Ethernet/IP communication capabilities for Enhanced PLC-5 processors.
- Direct physical attachment to the left side of the PLC-5 processor via a 62-pin connector header.
- Supports 10/100 Mbps data transmission speeds with auto-negotiation.
- Equipped with an RJ45 Ethernet port for standard network integration.
- Integrated status indicators (STAT, 100M, 10M) for real-time link and activity monitoring.
- Supports dual-link capability when used with specific PLC-5 Ethernet-enabled controllers.
Applications
- Automotive Production: High-speed coordination between multiple controllers in powertrain and paint lines.
- Material Handling: Routing and tracking for baggage, cargo, and parcel distribution systems.
- Water Treatment: SCADA communication link for municipal water and wastewater facilities.
- Metals Production: Real-time control for metal forming and casting processes.
- Food & Beverage: Monitoring of fermentation and brewing processes in large-scale facilities.
Technical Specifications
| Model |
1785-ENET |
| Communication Protocol |
Ethernet TCP/IP |
| Interface |
8-pin RJ45 |
| Backplane Current |
1.0 A @ 5V DC |
| Power Dissipation |
5 W |
| Heat Dissipation |
17.06 BTU/hr |
| Isolation Voltage |
50V |
| Wiring Category |
2 (on communication ports) |
| Temperature Code |
T5 |
Installation Guidelines
- Power Down: Ensure all power to the 1771 I/O chassis and the PLC-5 controller is disconnected before installation to prevent memory loss or processor faults.
- ESD Handling: Use standard electrostatic discharge (ESD) precautions when handling the module to prevent damage to internal circuitry.
- Connector Header: Snap the 62-pin connector header into the mating connector on the right side of the 1785-ENET module.
- Mounting: Align the connector header with the mating port on the left side of the PLC-5 processor. Press firmly to seat the connection and secure the assembly using the provided mounting screws.
- Compatibility: Verify the Series and Revision of your PLC-5 processor against the 1785-ENET compatibility matrix to ensure proper operation.
FAQs
What is the 1785-ENET?
The Allen-Bradley 1785-ENET is a sidecar module designed to provide Ethernet communication capabilities to Enhanced PLC-5 processors.
What is the 1785-ENET connection type?
The module mounts directly to the left side of a PLC-5 processor using a 62-pin header and provides an RJ45 connector for 10/100 Mbps Ethernet communication.
What indicates a faulty 1785-ENET setup?
The module status LED (STAT) will flash an error code 37 if the attached PLC-5 processor is not compatible with the module.
Can I use two cards in one PLC?
No, Rockwell Automation supports only one 1785-ENET card per processor. For dual-subnet requirements, consider using a processor with built-in Ethernet.
